Method and apparatus for transmitting information

Abstract

A transmission apparatus: encodes information into a first bit sequence, using a polar code; outputs a second bit sequence by inputting the first bit sequence to an interleaver; modulates the second bit sequence into modulation symbols according to a modulation order; and transmits the modulation symbols. The interleaver: has an odd number of columns; and is configured to cyclically read and output, from column k, bits stored in row n of the interleaver, and cyclically read and output, from column k+a, bits stored in row n+1 of the interleaver, wherein a represents an integer which is not 0.

The invention claimed is: 
     
       1. A method of transmitting information by a transmitting device in a wireless communication system, the method comprising:
 encoding the information using a polar code to produce a first bit sequence; 
 inputting bits of the first bit sequence to an interleaver to output a second bit sequence; 
 modulating the second bit sequence to modulation symbols based on 2 Q -quadrature amplitude modulation (2 Q -QAM), where Q is a modulation order and is a positive integer multiple of 4; and 
 transmitting the modulation symbols, 
 wherein the interleaver has columns 0 to C−1, where C is an odd number, 
 wherein the bits of the first bit sequence are stored column-wise in the interleaver, starting from a column 0 of the interleaver, and 
 wherein the interleaver outputs bits stored in a row n of the interleaver by cyclically reading out row-wise the bits stored in the row n starting from a column k and outputs bits stored in a row n+1 of the interleaver by cyclically reading out row-wise the bits stored in the row n+1 starting from a column k+a, where a is an integer other than 0. 
 
     
     
       2. The method of  claim 1 , wherein the number C of columns in the interleaver is ‘Q−b’ or ‘Q+b’, where b is an odd number not greater than Q. 
     
     
       3. The method of  claim 1 , wherein the number R of rows in the interleaver is ceil(M/C), where M is the length of the first bit sequence. 
     
     
       4. The method of  claim 1 , wherein the first bit sequence is obtained by applying rate matching to an output bit sequence of the polar code. 
     
     
       5. The method of  claim 1 , further comprising:
 applying rate matching to the second bit sequence, wherein the rate-matched second bit sequence is modulated to the modulation symbols. 
 
     
     
       6. A transmitting device for transmitting information in a wireless communication system, the transmitting device comprising:
 a transceiver; 
 a processor; 
 a memory storing at least one program that, when executed, causes the processor to perform operations comprising: 
 encoding, via an encoder, the information using a polar code to produce a first bit sequence; 
 outputting, via an interleaver, a second bit sequence based on bits of the first bit sequence; 
 modulating, via a modulation mapper, the second bit sequence to modulation symbols based on 2 Q -quadrature amplitude modulation (2 Q -QAM), where Q is a modulation order and is a positive integer multiple of 4; and 
 transmitting, via the transceiver, the modulation symbols, 
 wherein the interleaver has columns 0 to C−1, where C is an odd number, 
 wherein the bits of the first bit sequence are stored column-wise in the interleaver, starting from a column 0 of the interleaver, and 
 wherein the interleaver outputs bits stored in a row n of the interleaver by cyclically reading out row-wise the bits stored in the row n starting from a column k and output bits stored in a row n+1 of the interleaver by cyclically reading out row-wise the bits stored in the row n+1 starting from a column k+a, where a is an integer other than 0. 
 
     
     
       7. The transmitting device of  claim 6 , wherein the number C in columns of the interleaver is ‘Q−b’ or ‘Q+b’, where b is an odd number not greater than Q. 
     
     
       8. The transmitting device of  claim 6 , wherein the number R of rows in the interleaver is ceil(M/C), where M is the length of the first bit sequence. 
     
     
       9. The transmitting device of  claim 6 , wherein the operations further comprise: rate-matching, via a rate matching module, the first bit sequence and inputting the rate-matched first bit sequence to the interleaver. 
     
     
       10. The transmitting device of  claim 6 , wherein the operations further comprise: rate-matching, via a rate matching module, the second bit sequence and inputting the rate-matched second bit sequence to the modulation mapper.